Metode de consolidare.pdf
-
Upload
bodosi-balint -
Category
Documents
-
view
6 -
download
0
Transcript of Metode de consolidare.pdf
-
Strengthening and Repair of Reinforced
ConcreteStructures
Strengthening and Repair of Reinforced
ConcreteStructures
Ian Wienholt
Business Development Manager
-
u 34 years of Concrete Repair and Strengthening Experience
u Over 12,000 Repair Projectu Over 25,000 PT Projectsu 1,500 Employeesu 22 Offices- International
UAE and UK
u 34 years of Concrete Repair and Strengthening Experience
u Over 12,000 Repair Projectu Over 25,000 PT Projectsu 1,500 Employeesu 22 Offices- International
UAE and UK
-
Structural Group delivers services, systems and technologies that build, repair, protect, strengthen and reinforce concrete, steel, masonry, wood, timber and soils.
-
Concrete Repair & WaterproofingConcrete Repair & Waterproofing
-
Masonry RestorationMasonry Restoration
-
Building Envelope Group:Historic Division
Building Envelope Group:Historic Division
-
Building Envelope Group:Multi-Family Division
Building Envelope Group:Multi-Family Division
-
Concrete Repair ServicesConcrete Repair Services
Honeycombs
Missing Reinforcement
ConstructionDefects
-
General Repair Group:Strengthening DivisionGeneral Repair Group:Strengthening Division
-
AgendaAgenda
u Strengthening Case StudiesCFRP & NSM RodExternal / Internal PT Section Enlargement / Supplemental Beams
u Strengthening Case StudiesCFRP & NSM RodExternal / Internal PT Section Enlargement / Supplemental Beams
-
CFRP & NSMCFRP & NSM
-
Externally Bonded FRP Sheet
550,000 psi Tensile
10x that of steel
Lightweight
Does NOT corrode
-
FRP Design GuidelinesFRP Design Guidelines440.2R-02 440.2R-08
To Date: Nationwide 15-18M sqft installedSPS 7M sqft installed on over 700 + projects
ACI 440.2R-08Em
ergin
g Tec
hnolo
gy
-
FRP Materials
SEM Image of FRP
FiberFiber
ResinResin
-
Tension Steel
Yield
FRP carries TENSION
What Is FRP Flexural Strengthened R/C?
Positive Moment
-
CompressionConcrete carries COMPRESSION
TOP
BOTTOM
Steel Tension
Yield
FRP carries TENSION
What Is FRP Flexural Strengthened R/C?
Column
Negative Moment
-
SHEAR
What Is FRP Shear Strengthened R/C?
-
CFRP Installation Step 1CFRP Installation Step 1
Surface Grinding / Shot Blasting to open pores
-
CFRP Installation Step 2CFRP Installation Step 2
VE primer
-
CFRP Installation Step 3CFRP Installation Step 3
VE putty
-
CFRP Installation Step 4CFRP Installation Step 4
VE tack coat
-
Carter Ave Bridge UpgradeCarter Ave Bridge Upgrade
Tack coat QC
-
CFRP Installation Step 5CFRP Installation Step 5
CFRP saturator
-
CFRP Installation Step 6CFRP Installation Step 6
CFRP sheet lay up
-
CFRP Installation Step 7CFRP Installation Step 7
Embedding of CFRP in tack coat
-
CFRP Installation Step 8CFRP Installation Step 8
Rib rolling
-
Finished CFRP- Top, Sides, Bottom
CFRP Installation CompletedCFRP Installation Completed
-
Carter Ave Bridge UpgradeCarter Ave Bridge Upgrade
-
Carter Ave Bridge UpgradeCarter Ave Bridge Upgrade
Acrylic / Intumescent Topcoat installation
-
CFRP Finished ProductCFRP Finished Product
-
Supplemental Strengthening ONLY w/FRP!
42
FRP?
-
Supplemental Strengthening ONLY w/FRP!
-
CFRP Interfacial Shear FailureCFRP Interfacial Shear Failure
-
FRP Plates FRP Plates
-
FRP Rods
-
Flexural Strengthening Case Study
FRP Rod InstallationFlexural Strengthening Case Study
FRP Rod Installation
-
Parking Garage Ramp Parking Garage Ramp
-
Parking Garage Ramp FRP Sheet
-
NSM Rods Parking Garage Ramp
-
Damaged Double TDropped 2T in Parking Garage
-
Shear upgrade of 2T stem with FRP
-
Step plies
Flexural Detailing GuidelinesFlexural Detailing Guidelines
U Wrap
-
Quality ControlQuality Control
Field ApplicationField Application
-
Quality Control-Cure Test Cups DailyQuality Control-Cure Test Cups Daily
AB1Gal.
Pour off sample To verify cure
-
Tap test or other Tap test or other Pull testPull test
Sounding and Bond Tests
`
PingPuck
-
Sounding
6
-
Witness Panels for Testing
-
Pull off Bond Test Min. 200psi
-
Locate Bond Test Dollies outsidework area or on an additional piece of FRP
-
Locate Bond Test Dollies outsidework area or on an additional piece of FRP
Ear plug to protect threads
-
Frequency for Pull Testing
1 PULL PER INSTALLATION DAY MINIMUMOR
PER ENGINEERS SPEC (per sqft installed)
-
Repair Procedure1 - Identify Repair Area
Less than 2 Sq. In. / 5% Total Area Max. OK If 2 to 4 sq. in. inject with low pressure
-
Repair Procedure
-
Repair ProcedureStep 2 - Remove Composite Material
If greater than 4sq. In. grind or sawcut area
-
Repair ProcedureStep 3 - Prepare Lap Area
Minimum repair lap = 6 inches
6
-
New Loads or low strength concreteNew Loads or low strength concrete
-
CFRP Column ConfinementCFRP Column ConfinementIncreased:
Axial CapacityBuckling
Resistance
Bomb Blast
Resistance
-
General Concept
-
Structural UpgradeResorts Casino- Atlantic City
Structural UpgradeResorts Casino- Atlantic City
-
Structural UpgradeResorts Casino- Atlantic City
-
Structural Upgrade-Buckling ResistanceResorts Casino- Atlantic City
-
Structural UpgradeResorts Casino- Atlantic City
-
Blast Mitigation for ColumnsTruck bomb at curbside
-
Blast Mitigation for Columns Truck bomb at curbside
No FRP
-
Blast Mitigation for Columns Truck bomb at curbside
No FRP
-
Blast Mitigation for Columns Truck bomb at curbside
-
Guggenheim Museum NYCGuggenheim Museum NYC
1959
-
Guggenheim Museum NYCGuggenheim Museum NYC
-
Guggenheim Museum NYCGuggenheim Museum NYC
-
Goal: Extend the life of the structure by 100 years
Exhaustive investigative survey completed and found 11 coats of paint on the exterior
All exterior surfaces would be restored so that the original form lines would once again be visible
Guggenheim Museum NYCGuggenheim Museum NYC
-
Original Construction Photo Circa 1957
-
Destructive testing to
open crack
-
SteelT-Section
RebarDiscontinuous
-
Original Construction Photos
-
Guggenheim Museum
-
Guggenheim Museum-Analysis & Monitoring
Circumferential Forces Vertical Forces
-
Initial repair concept
FRP
-
Steel brackets b/n web walls
Bond
Grout
-
DoubleBarrier Walls
Museum remained open!
-
Surface Preparation8,000 psi
1,674,345,869 Diamond Cup Wheels Used!
-
Extensive Crack Repair Required
-
Rout & Sealvs.Epoxy Injection
-
CFRP Installation
-
Web WallBrackets
-
Gunite wall to apron slab bracket FRP
Bracket
-
Apron bracket
Stainless
Steel
Grout
-
Shear transfer plate across cracks
-
Completed repair prior to insulation and drywall
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Pier expansion design included new pre-cast deck panels as well as a new 92 ramp for RO/RO cargoChange in use and heavier loads required strengthening upgrade to pier capsCFRP system designed for increased strength and long-term durability in marine environment
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Challenge #1:Time Critical Schedule
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Challenge #2:Weather conditions
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Challenge #3:Access via work floats
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Challenge #4:Coordination with other trades
Crane
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Challenge #5:Employee safetyWater dangerWind / Waves Boat wakes
Rising tidesEnclosed space
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Change of Scope:Concrete repair performed per ICRI guidelines
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
CFRP Termination Detail
CFRP Fabric U Wrap
NSM CFRP Rods
Concrete Pile Cap
1 2
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Completed CFRP Strengthening
-
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
South Locust Point Marine TerminalRoll-On / Roll-Off Platform
Completed Platform Ready for Cargo
-
Why do we love core
drills?
-
- They keep us in business
-
- They challenge us.
-
- They make us laugh..
-
Penetrations and the Core DrillShortest distance between 2 points is a straight line Penetrations and the Core Drill
Shortest distance between 2 points is a straight line
-
Process for New Slab PenetrationsVariables- Quantity of bars cut and size of Hole
-
New Penetrations New Penetrations
Column strip
-
New PenetrationsNew Penetrations
-
Internal & External Post Tensioning
Internal & External Post Tensioning
-
External Post Tensioning
F
FTENSION
NEW LOAD
Uplift at Deviator
Dead end
Live end
-
Flexural Strengthening Case StudyEnvironmental Overload
US Census Bureau HQ Suitland, MD.
-
Flexural Strengthening Case StudyEnvironmental Overload
4-630
-
Flexural Strengthening Case StudyEnvironmental Overload
Tension Tension
YIELD
-
Flexural Strengthening Case StudyEnvironmental Overload
-
Flexural Strengthening Case StudyEnvironmental Overload
Form & Pump
Amplitude
-
Flexural Strengthening Case StudyEnvironmental Overload
Dowel Hole Drilling
High Pressure Water Blasting
Dowel Insertion
-
Flexural Strengthening Case StudyEnvironmental Overload
-
Flexural Strengthening Case StudyEnvironmental Overload
-
Flexural Strengthening Case StudyEnvironmental Overload
-
Flexural Strengthening Case StudyEnvironmental Overload
-
Flexural Strengthening Case StudyEnvironmental Overload
-
Flexural Strengthening Case StudyEnvironmental Overload
43
-
Internal PTInternal PT DrillPT
-
Higher Loads on 2T- Load PathHigher Loads on 2T- Load Path
-
PolyethyleneSheathing
Intumescent FireRetardant Coating
Heat Resistant TendonHeat Resistant Tendon
Polyethylene Sheathing
Grease
270k P.T.Strand
-
Anchorage pin
DeviatorExternal PT
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Deviator
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Center Z Anchor
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Anchorage pin
DeviatorExternal PT
Higher Truck Loads- Ext. PT & OverlayHigher Truck Loads- Ext. PT & Overlay
-
Section Enlargement & Supplemental
Beams
Section Enlargement & Supplemental
Beams
-
East Coast Ski ResortTransfer Slab Upgrade
-
Transfer Slab Cracking Transfer Slab Cracking
-
Foundation & Column Enlargements
Foundation & Column Enlargements
-
Foundation & Column Enlargements
Foundation & Column Enlargements
18 Column Enlargements
-
Demo and PrepDemo and Prep
PAM Machine in Action
-
Supplemental Beam-Column Connection
Supplemental Beam-Column Connection
-
Mechanical Anchoring and Reinforcement Cage
Mechanical Anchoring and Reinforcement Cage
2000 Undercut Anchors
3000 HiltiStuds
-
Through-Bars at Column HeadThrough-Bars at Column Head
-
SCC Pumping Anyone???SCC Pumping Anyone???
40 Tons of Steel
1100 LF
-
Enlargement Prep & Placement
NewExisting
-
Finished ProductFinished Product
185 CU YDS / 375 Tons of
Concrete
-
Finished ProductFinished Product
-
Finished ProductFinished Product
-
Repair, Upgrade and Strengthening ProcessRepair, Upgrade and Strengthening Process
Existing Capacity New Demand
Engineering
Material
Science
Test/Verification
Constructability
Aesthetics
Economics
-
Existing Capacity New Demand
EngineeringMaterial ScienceTest/Verification Constructability
Aesthetics
Economics
Repair and Strengthening Process
ReverseEngineer
-
Concluding RemarksTHANK YOU!Concluding RemarksTHANK YOU!
u Contracting Servicesu Preliminary Design and
Estimate Supportu D/B Capabilitiesu Optimizing Repairsu Load Testingu Comprehensus
u Contracting Servicesu Preliminary Design and
Estimate Supportu D/B Capabilitiesu Optimizing Repairsu Load Testingu Comprehensus